Circuit Types Tandem Circuit Priority

Catalog HY17-8505/UK	Open-Center Directional Control Valve
Technical Information	VO40

Circuit Types – Parallel Circuit

In the open-center parallel circuit, oil flows through the open-center passage when all of the spools are in neutral. When spools are shifted, oil is diverted into the parallel path and available to each of the selected work-sections. Simultaneous operation can be achieved, when two or more spools are selected. However, since oil will take the path of least resistance the operator must meter the flow to each function to get a desired function speed.

T1
P1 [24]	B A	B A	B	A	T4
[26]					[34]

Circuit Types – Tandem Circuit (Priority)

In the open-center tandem circuit, oil flows through the open-center passage when all of the spools are in neutral. Tandem work-sections are fed from the open center and the parallel path is blocked. A tandem work-section will give priority to an upstream work-section.

P1	T1					T4
P1	[24]	B A	B A	B	A	T4
[26]		B A	B A	B	A	[34]
[26]						[34]

Parker Hannifin Corporation

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Parker Hannifin manual Technical Information VO40 Circuit Types Parallel Circuit, Circuit Types Tandem Circuit Priority

VO40 specifications

Parker Hannifin's VO40 is a sophisticated and versatile hydraulic valve that has garnered attention for its innovative design and wide-ranging applications. Designed to meet the increasing demands for efficiency and reliability in various industrial and mobile machinery, the VO40 series exemplifies Parker's commitment to providing high-performance solutions.

One of the primary features of the VO40 is its compact design, which allows for easy integration into systems with limited space. This is accomplished without sacrificing performance, as the valve delivers exceptional flow rates, which can significantly enhance the efficiency of hydraulic systems. The VO40's multi-functionality enables it to serve diverse roles, from directional control to flow regulation, making it suitable for a variety of hydraulic applications.

The VO40 utilizes advanced technologies, including modular construction, which provides flexibility for different system configurations. This modularity allows users to customize the valve to their specific requirements, whether they need a simple on/off control or more complex, proportional flow regulation. The valve's design also incorporates electronic control capabilities, enabling users to achieve precise movements and optimize system performance.

In terms of materials, the VO40 is constructed from robust components to withstand high-pressure operations and harsh environments. The valve's sealing technology is engineered for durability and reliability, minimizing the risk of leaks and prolonging the service life of the product. This reliability is a critical factor in reducing maintenance costs and ensuring operational continuity in demanding applications.

Another significant characteristic of the VO40 is its ease of installation and maintenance. The design allows for quick assembly and disassembly, which is crucial for minimizing downtime during maintenance activities. Additionally, the valve features diagnostic capabilities, enabling operators to monitor performance and address potential issues proactively.

In conclusion, the Parker Hannifin VO40 hydraulic valve stands out in the marketplace due to its compact size, modularity, advanced electronic controls, and robust construction. Its design and technology make it an ideal choice for users seeking reliable and efficient solutions for their hydraulic systems. By integrating the VO40 into their operations, companies can enhance productivity while ensuring a long-lasting, low-maintenance hydraulic solution.

Contents

VO40 Open-Center Directional Control Valve Offer of Sale VO40 Contents VO40 Conversion factors Introduction VO40 Breadth of Line Total Machine Motion Control Customer Service with a Global Reach Introduction VO40 State-of-the-Art Manufacturing Operation Open-Center Directional Control ValveTechnical Information VO40 General Description Benefits Weights Technical Information VO40 SpecificationsConnections Environmental Characteristics Technical Information VO40 Performance Curves Technical Information VO40 Circuit Types Parallel Circuit Circuit Types Tandem Circuit Priority Dimensions VO40 Assembly Pneumatic Actuator Dimensions Mechanical JoystickDual Actuator Handle Rod Push Handle Example Inlet Cover Sect #1 Inlet Cover Portion of Spec Sheet140 Surface Treatment Paint Connections ThreadCustomer Designated ID Enter Customer Part Number Type of Inlet Ordering Information Inlet Cover VO40Max Pump Flow 24 to 27 Inlet Porting Options 17C Relief Flow Setting Ordering Information Inlet Cover VO40 Main Relief Options 33 to 35 Outlet Porting Options Ordering Information Outlet Cover VO40Type of Outlet US Standard Top and Side Oulet Ports Power-Beyond Closed-Center Ordering Information Work Sections VO40 Work Section Circuitry Spring centered with in detent Ordering Information Work Sections VO40 Spool ActuatorsDetent in neutral and a positions Detent in a position and spring centering 51C Spool Clevis or Handle Bracket Location Spool Position Indication Ordering Information Work Sections VO40 Spool Function 88 A/B Work Port Option 76 A/B Work Port ValvesSpacer Section Mid Inlet Options 98C Mid-Inlet Relief Flow SettingOrdering Information Mid-Inlet VO40 Main Pressure Relief Form Parker Hannifin Extensive Hydraulic Product Offering Hydraulics Group Sales Offices